The others came in, and a minute later a torch was lit, and all examined the map with care. Then Roger uttered a cry:
"Dave, look there!" and the senator's son pointed to one corner of the map. In faint letters was the written name:
"The very man I am looking for!" ejaculated Dave, and his heart gave a bound. "Oh, boys, what can it mean?"
"It means that Mr. Porter has been here," answered Roger.
"He must have been hunting for that treasure," said Phil. "This may be one of his maps."
"That's a fact," said Billy Dill. "He was always drawing jest such things when I was with him. He said he was bound to find that treasure some day."
"This map looks to be quite old," went on Dave, in disappointed tones. "I wish it was fresh and he was here."
"He must have come here after sailing to Sobago Island," said the senator's son, "and that can't be so very long ago."
After that they made a closer hunt than before in and around the camp, but found nothing, outside of two buttons, a bit of lead pencil, and the broken handle of a spade.